N.H. Code Admin. R. Env-A 1221.07

Current through Register No. 25, June 20, 2024

Section Env-A 1221.07 - Compliance Standards for the Use of Industrial Cleaning Solvents

(a) The owner or operator of a source subject to this section shall limit VOC emissions from the use, handling, storage, and disposal of cleaning solvents and shop towels by implementing the following work practices:

(1) Covering open containers and used applicators;

(2) Minimizing air circulation around cleaning operations;

(3) Properly disposing of used solvents and shop towels; and

(4) Maintaining cleaning equipment to prevent and repair solvent leaks.

(b) Except as provided in (c) or (d), below, the owner or operator of a source subject to this section shall limit VOC emissions by using cleaning solvents with a maximum VOC content limit of 50 grams VOC per liter, equivalent to 0.42 lb/gal.

(c) As an alternative to the content limit in (b), above, an owner or operator shall either:

(1) Use a cleaning solvent with a composite vapor pressure of 8.0 millimeters or less of mercury (mm Hg), measured at 20°C, equivalent to 68°F; or

(2) Comply with the RACT order provisions in Env-A 1205.03 through Env-A 1205.06.

(d) As an alternative to the content limit in (b), above, a manufacturer of coatings, inks, resin, or adhesives shall control VOC emissions when cleaning portable or stationary mixing vats, high dispersion mills, grinding mills, tote tanks, and roller mills by:

(1) Collecting and venting the emissions to a VOC emission control system that has an overall capture and control efficiency of at least 80 percent, by weight, for the VOC emissions, provided that where the reduction is achieved by incineration, at least 90 percent of the organic carbon shall be oxidized to carbon dioxide;

(2) Using a cleaning solvent that contains less than 200 g/l VOC, equivalent to 1.67 lb/gal; or

(3) Using organic solvents other than those allowed in (b) or (c)(1), above, provided that:

a. No more than 60 gallons of fresh cleaning solvent shall be used per month; and

b. The owner or operator shall maintain records for 5 years on the total volume of fresh cleaning solvent used and the total volume of cleaning solvent recovered for on-site or off-site recycling.

N.H. Code Admin. R. Env-A 1221.07

(See Revision Note at chapter heading for Env-A 1200) #9933, eff 6-1-11

Amended by Volume XXXIX Number 46, Filed November 14, 2019, Proposed by #12899, Effective 10/17/2019, Expires 10/17/2029